Time frame from two lines to positive OPK?

Je

Hi ladies,

After 3 months of using OPKs and never getting even a second line I finally got one! (Not a positive yet as isn't as dark as control line but after testing a second time today 4 hours later it's darker then the first 1)

How long have you ladies got a positive after seeing two lines? Will BD tonight just to be safe!

😄 x